OFFSET
1,1
COMMENTS
It seems that this sequence consists of all numbers A that can be generated (recursively) by the following procedure: A -> 742 | 742B742 | 783A162 and B -> 5 | 162B783 | 5A5.
LINKS
Tanya Khovanova's math blog, Continue the sequence: 742, ...
FORMULA
k = 3*reversal(k) + 1.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Tanya Khovanova, Nov 24 2021
EXTENSIONS
a(12)-a(15) from Jon E. Schoenfield, Nov 25 2021
STATUS
approved